How to Calculate Pig Weight

Buying a scale that can weigh pigs and other farm animals can be an expensive investment. If you need to calculate the weight of a pig and do not have a livestock scale at your disposal, it is possible to obtain a rough estimate of your pig's weight without the use of a scale. You will only need simple items that you can find around your house.

Things You'll Need

  • Fabric measuring tape
  • Calculator
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Instructions

    • 1

      Measure the pig's heart girth. Place the fabric measuring tape around the pig, just behind the front legs. Note the pig's circumference in inches.

    • 2

      Measure the pig's length in inches. Start at the base of the pig's ears and measure to the base of its tail. Note the pig's length.

    • 3

      Calculate the pig's girth measurement. To calculate the girth, you will square the heart girth measurement. For example, if the pig had a heart girth of 44 inches, you will multiply 44 x 44, and calculate a girth measurement of 1936.

    • 4

      Multiply the pig's girth measurement by its length. If our example pig had a length measurement of 39 inches, you would multiply 1936 x 39 and get a total of 75,504.

    • 5

      Divide your total by 400. This is your pig's weight in pounds. Following our example, we would divide 75,504 by 400, to calculate a total weight of 188.76 lbs.